I have been posting some pictures on this pen, our "vacumatic". The Venvstas V.A.C. in carbon fiber, but many of you asked for a video to see the pen.
Here the link to the video, where you can see it in action, and also dismantled on the spot.
Carbon fiber/fiberglass construction, 14k 6 mm nibs as standard.
Vacumatic type of filling mechanism with piston instead of diaphragm for producing the vacuum, SPRING action, no blind cap and locking mechanism.
6mm feed in-house made in carbon fiber with stainless steel breath tube.
Carbon fiber pen case included.
2.0ml effective ink capacity.